生命周期评估
环境科学
清洁生产
制氢
废物管理
环境影响评价
能量载体
可再生能源
环境工程
环境保护
作者
Yuke Jia,Yueyang Bai,Jingcai Chang,Yijie Zhai,Tianzuo Zhang,Ke Ren,Jinglan Hong
标识
DOI:10.1016/j.jclepro.2022.131655
摘要
Hydrogen peroxide (H 2 O 2 ) is a mild chemical synthetic oxidant, which has gained wide importance in industrial and research fields. However, systematic assessment of its environmental performance during H 2 O 2 production is limited worldwide. In this regard, a life cycle assessment was conducted to quantify the environmental impacts of H 2 O 2 produced by four mainstream hydrogen production technologies in the upstream, identify the optimization potential, and provide a basis for chemical product research. Results illustrated that compared with the hydrogen from coal, petroleum, and natural gas, the utilization of chlor-alkali by-product hydrogen to produce H 2 O 2 could prevent 27%, 11%, and 25% environmental contamination throughout the national life cycle, respectively. Fossil depletion, global warming, water depletion, and non-carcinogens categories are the main areas of concern for H 2 O 2 production. The potential environmental impacts of H 2 O 2 production are primarily ascribed to energy (i.e., electricity and steam) consumption and direct water consumption. Therefore, several suggestions are provided for the critical environmental impact factors of H 2 O 2 production toward the achievement of sustainable development requirements. The recommendations are to develop renewable energy sources, change the fuel composition, optimize the steam heat recovery systems, and apply air–water coupled cooling technology in the H 2 O 2 production process to achieve cleaner production and improve environmental performance. From the perspective of industrial layout, China's western region should consider the promotion of H 2 O 2 production from the chlor-alkali industry given the abundant renewable energy and raw material resources to enhance inter-regional coordination and sustainability. • The environmental performance of China's H 2 O 2 production is qualified. • H 2 O 2 produced using four sources of hydrogen are compared. • Hydrogen produced from the chlor-alkali industry is the most eco-friendly scenario. • Hydropower substitution and steam heat recovery system are worth promoting. • Western China has potential to produce H 2 O 2 in resource and environmental aspects.
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